Updated: March 2021
| Register Code | Description |
| / | Present AM |
| \ | Present PM |
| L | Late (before registers closed) marked as present |
| C | Authorised absence as pupil is absent due to other authorised circumstances |
| E | Authorised absence as pupil is excluded, with no alternative provision made |
| H | Authorised absence due to agreed family holiday |
| I | Illness (NOT appointments) |
| I01 | Authorised absence due to illness (NOT medical or dental etc. appointments) |
| I02 | Authorised absence due to illness: confirmed case of coronavirus (COVID-19) |
| M | Authorised absence due to medical/dental appointments |
| R | Authorised absence due to religious observance |
| S | Authorised absence due to study leave |
| T | Authorised absence due to traveller absence |
| B | Approved education activity as pupil being educated off site (NOT dual registration) |
| J | Approved educational activity as pupil is attending an interview |
| P | Approved educational activity as pupil is attending an approved sporting activity |
| V | Approved education activity as pupil is away on an educational visit or trip |
| W | Approved educational activity as pupil is attending work experience |
| G | Unauthorised absence as pupil is on a familiy holiday, NOT agreed, or is taking days in excess of an agreed family holiday |
| N | Unauthorised absence as pupil missed sessions for a reason that has not yet been provided |
| O | Unauthorised absence as pupil missed sessions for an unauthorised absence not covered by any other code/description |
| U | Unauthorised absence as pupil arrived after registers closed |
| D | Dual registered (at another establishment - NOT counted in possible attendance |
| X | Not required to be in school |
| X01 | Non-compulsary school age absence - not counted in possible attendances |
| X02 | Pupil self-isolating with Coronavirus (COVID-19) symptoms |
| X03 | Pupil self-isolating due to potential contact with a confirmed case of coronavirus (COVID-19) INSIDE school setting |
| X04 | Pupil self-isolating due to potential contact with a confirmed case of coronavirus (COVID-19) OUTSIDE school setting |
| X05 | Pupils required to self-isolate as part of quarantine requirement (after arriving in the UK from a non-exempt country or territory) |
| X06 | Pupil not in school because they have been advised specifically by their Doctor or public health authority that they are clinically extremely vulnerable and should not attend |
| X07 | Pupil advised specifically not to attend school as part of restrictions to education set out in Government advice |
| Y | Unable to attend due to exceptional circumstances - not counted in possible attendances |
| Z | Pupil not yet on roll - not counted in possible attendances |
| # | Planned whole or partial school closure - NOT counted in possible attendances |
| Colour | Description |
| Present | |
| Authorised Absence | |
| Approved Educational Activity - Counted as Present | |
| Unauthorised Absence | |
| Not Counted in Attendance Calculations |
The codes X (Not required to be in school, formerly marked as Early Years) and I (illness NOT appointments) are still available if your school wishes to continue with their use. Alternatively, X01 and I01 are equivalent codes in the new DfE subcategories should you wish to use them instead.
Note: the subcategory codes for X and I relating to Covid-19 non-attendance are outlined in this Department for Education guidance (March 2021):